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- Posch, Josefina
(author)
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EP9 Starlight Reserves
- 2023
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In: Göteborgs Botaniska Trädgård, GIBCA Extended, 2023-08-19.
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Artistic work (other academic/artistic)abstract
- The sculpture EP9 Starlight Reserves was installed in Amerikadammen in Göteborgs Botaniska Trädgård and part of GIBCA Extended 2023. This work is situated in the expanded field of sculpture, where the negotiation with a specific situation plays a central role in material investigations of environmental and sustainability concerns. The shape and title of the sculpture derive from the container of old batteries, "Exposed Pallet 9," which the International Space Station launched into space in 2021 to circulate around the Earth for 2-4 years before entering the Earth's atmosphere and hopefully burn up. [1] Commercial interests, colonization, and tourism led by rich nations and private companies contribute to the increase of space debris. The main inquiry of this research project is how artistic work, through visualization in sculptural form, can draw attention to scientific observations and advocacy in establishing international environmental space law concerning space debris. By using recycled plastic from electronic scrap for the large-scale IRBAM printing of the sculpture, the work highlights the potential for sustainable and ephemeral materials in sculptural production to promote environmental awareness and question the validity of the standard requirement for "permanence" in public sculpture. 3D printing in collaboration with Samuel Johansson and Woodrow Wiest RISE – AM center in Mölndal, Sweden with in-kind funding. Supported by Göteborgs Stad Kultur och Göteborgs Botaniska Trädgård. [1] Mike Wall, “Space station tosses 2.9-ton hunk of space junk overboard. It will stay in orbit for years.”, space.com, accessed January 3, 2024, https://www.space.com/space-station-jettisons-huge-space-junk-pallet
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- Wang, Xuying, et al.
(author)
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Bioaccessibility and reactivity of alloy powders used in powder bed fusion additive manufacturing
- 2021
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In: Materialia. - : Elsevier. - 2589-1529. ; 19, s. 1-10
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Journal article (peer-reviewed)abstract
- Exposure to metal particles via the inhalation route unavoidably takes place at occupational settings during additive manufacturing of metals and alloys. This calls for investigations on possible adverse health effects. This study focuses on virgin and reused powders of three iron- and nickel-based alloy powders (316L, IN718, 18Ni300) widely used in additive manufacturing, and dust powder of 18Ni300 generated during laser melting. Investigations were performed from a physico-chemical and toxicological perspective assessing their bioaccessibility in artificial lysosomal fluid (ALF, simulating lung exposure to respirable particles), corrosion behavior, surface morphology and composition, microstructure, hydrodynamic size distribution in ALF, and in-vitro toxicity towards cultured human lung cells. Less than 1 % of the powder mass was dissolved from the passive alloys (316L, IN718) under simulated physiological conditions (pH 4.5, 37°C, 24 h), whereas the 18Ni300 iron-nickel alloy showed an active behavior and dissolved completely. Reused powders of 18Ni300 and IN718 showed no, or only minor, differences in surface oxide composition, metal release pattern, and corrosion behavior compared with virgin powders. After reuse, the 316L powder showed an enrichment of manganese within the outermost surface, an increased corrosion current, increased amounts of released iron and an increased fraction of particles with ferritic microstructure, which increased the extent of particle aggregation. All powders showed low, or negligible, cytotoxic potency and reactive oxygen species formation. Powder bed fusion using laser melting can hence affect the chemical, physical, and surface properties of non-fused powders, which, if reused, could influence the properties of the printed part.
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- Worbin, Linda
(author)
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Designing dynamic textile patterns
- 2010
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Artistic work (other academic/artistic)abstract
- Designing Dynamic Textile Patterns Progress in chemistry, fibres and polymers technology provides textile designers with new expressive materials, making it possible to design dynamic textile patterns, where several different expressions are inherent in the same textile, textiles that, for example, could alternate between a striped and checkered pattern. Textiles are traditionally designed and produced to keep a given, static expression during their life cycle; a striped pattern is supposed to keep its stripes. In the same way textile designers are trained to design for static expressions, where patterns and decorations are meant to last in a specific manner. However, things are changing. The textile designer now deals also with a new raw material, a dynamic textile, ready to be further designed, developed and/or programmed, depending on functional context. This transformation in practice is not an easy one for the designers. Designers need to learn how to design with these new materials and their specific qualities, to be able to develop the full expressional potential inherent in “smart textiles design”. The aim of this thesis is to display, and discuss, a methodology for designing dynamic textile patterns. So far, something that mainly has been seen in different experimental and conceptual prototypes, in artistic expressions and for commercial efforts etc. In terms of basic experimental research this thesis explores the turn in textile design practice through a series of design experiments with focus on contributing to identifying and characterizing new design variables, new design methods and new design techniques as a foundation for dynamic textile patterns.
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- Almssad, Asaad, 1967-
(author)
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Betongkonstruktion
- 2015
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Book (other academic/artistic)abstract
- Betongkonstruktion behandlar dimensionering och utförande av betongkonstruktioner enligt Eurocode 2. Boken består av en teoridel som innefattar:• Böjning och böjning med normalkraft• Pelare och väggar• Genomstansning• Plattor• Beräkning i bruksgränstillståndetBokens konkreta pedagogiska värden är, utöver ett stort antal övningsexempel med lösningar och svar, ett avsnitt med utvecklande övningsuppgifter som studenterna kan lösa själva.Svaren till dessa uppgifter finns i boken och utförliga lösningsförslag finns att tillgå på webben, www.studentlitteratur.se/39041.
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- Almssad, Asaad, 1967-
(author)
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Betongkonstruktion : Formelsamling
- 2016
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Book (other academic/artistic)abstract
- Ett komplement till boken Betongkonstruktion. Formelsamlingen är framtagen för att användas som hjälpmedel vid examination i högskole- och universitetskurser inom betongkonstruktion.
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- Dumitrescu, Delia
(creator_code:cre_t)
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designing with heat
- 2009
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Artistic workabstract
- Aiming to open a new design space that connects three areas of architectural, interaction and textile design, the knitted structures Furry lines and Groovy squares were designed. By combining conventional textile yarns together with conductive yarns, the result investigates the sensation of warmth through the design of knitted structures. The purpose is to offer a synesthetic experience that correlate the physical and visual perception of space and focuses on tactility as an asset to create interactive architectural environments. The structures were made using different knitting techniques, combining a silver-coated copper yarn and conventional textile yarns. The silver coated copper yarn is used both for heat generating and touch sensing properties. Connected to a microcontroller able to sense and react on small differences in electricity, the textile becomes a touch sensor itself. By offering feed-back to hand touch DESIGNING WITH HEAT DELIA DUMITRESCU ANNA PERSSON by becoming warmly pleasant to the skin, new types of patterns can be created using the combination between heat and human touch that exceed the visual dimension. Designing with heat exemplifies how visible and invisible expressions merge into one experience, expressed through the textile material. The textile structure is perceived both through the eyes of imagination and the skin as heated patterns. The prototypes show how heat could be part of the surface aesthetics alongside with colour and shape.
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- Duwig, Christophe
(creator_code:cre_t)
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Exhibition : Towards the energy of the future – the invisible revolution behind the electrical socket
- 2023
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Artistic workabstract
- Energy Crisis! Electricity Price drama! The threat of global energy poverty! Media are generous with spectacular titles. Yes, energy is important, and yes, nearly all societal challenges are connected to how we convert, distribute and use energy. Therefore, the KTH Energy Platform and KTH Library presented an exhibition with the theme Towards the energy of the future – the invisible revolution behind the electrical socket.The exhibition displayed showcase illustrations from the book made by Lotta Waesterberg Tomasson, as well as books related to energy and electricity from the KTH Library's collections. In parallell with the exhibition, a series of live popular science lunch seminars with presentations of selected chapters of the book took place. As part of the exhibition, students from KTH's Electrical Engineering program also showcased exciting projects that connect to the anthology’s contents, made with materials and equipment from the student-driven ELAB and “Studentverkstan”. Visitors were also invited to share their reflections and ideas on energy.
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